Lasers are used for a variety of applications. Which of the following is an example of areas that lasers are used.

• commercial fields

• scientific fields

• medical applications

• all of the above

Which of the following determines the kinds of application would be appropriate for a particular laser?

• The size and number of mirrors in the laser

• The excitation level of the atoms

• the output power and wavelength of the laser

• the amount of electricity that it uses

Which of the following is an analysis of the technique in which a laser is used to illuminate the sample being studied in order to determine an exact absorption spectrum?

• laser spectroscopy

• LASIK

• nuclear fusion

• wave-particle duality

Complete the following sentence.

__________________ are the building blocks of the world around us.

• Photons

• Electrons

• Neutrons

• Atoms

Who proposed the idea in 1905 that light itself is quantized into discrete energy packets that exhibit properties of particles?

• Albert Einstein

• Niels Bohr

• Nikkola Tesla

• Max Planck

In 1900 Max Planck proposed which of the following ideas

• That the electromagnetic spectrum existed

• That energy existed in discrete energy packets

• that energy can only be exchanged in discrete bundles that are multiples of a fundamental unit of energy.

• That objects derive their color by absorbing all of the colors of light that we don't see and the color we do see is only the light that is being reflected back to us.

Gas lasers, solid-state lasers, and diode lasers all rely on which of the following

• stimulated emissions and optical resonators

• light emitting diodes and HeNe

• gasses and mirrors

• crystals

Who invented the maser in 1954?

• Albert Einstein

• Charles Townes

• Arthur Schawlow

• Theodore Mainmen

Which of the following lights is the most efficient?

• maser

• incandescent

• fluorescent

• LED

Which of the following is a result of the production of light due to an object being at a high temperature?

• fluorescence

• phosphorescence

• incandescence

• active medium